textproduct: Quad Cities

KEY MESSAGES

- Dry and seasonal weather is in store for the remainder of the work week.

- Pattern to become more active this weekend and beyond, with shower/storm chances increasing into next week.

SHORT TERM /THROUGH THURSDAY NIGHT/

Issued at 210 PM CDT Wed Aug 26 2026

Shortwave trof will be off to the east, with upper ridge remaining in place over the Rockies through the rest of the week. This will keep the region under northwest flow, with surface high pressure moving in tonight and tracking through the area Thursday. A stretch of quiet and seasonal weather will result with daytime temps in the low-mid 80s and nights in the upper 50s to low 60s, along with light/variable winds and low humidity. Enjoy the pleasant weather!

LONG TERM /FRIDAY THROUGH TUESDAY/

Issued at 210 PM CDT Wed Aug 26 2026

Friday and Saturday, upper ridge over the Central CONUS begins to break down and shift easterly. Surface high pressure will start to move east of the area on Friday, resulting in increasing llvl southwesterly flow going into Saturday. Friday will remain dry and pleasant, with temperatures in the 80s, lower humidity, and mostly clear skies. With return flow kicking in Saturday, we will start to see temperatures and moisture gradually increase through the day. Precipitation chances have been trending upwards for Saturday, as a wave slowly approaches Friday night and meanders through the area on Saturday. Some guidance would indicate the potential for a decaying line of showers/storms in the morning, with the potential for redevelopment along any outflow that afternoon. Although, much uncertainty exists owing to plenty of dry air for this to battle. This will be something that we keep an eye on over the coming days. Will stick with the NBM PoPs at this point, where it highlights areas largely north of Interstate 80 in 20-45% chances.

Saturday night and beyond, better llvl return flow will be centered over the area, resulting in increasing temperatures and moisture. Temperatures in the upper 80s to low 90s will be possible, especially in our south. With increasing humidity as well, some areas may have heat indices approaching 100. The strengthening LLJ will allow PoPs to continue overnight Saturday into Sunday, largely north of Interstate 80. Upper level flow will generally be zonal to southwesterly through the remainder of the forecast period, which may put us under the active storm path. Thus, if this pattern holds true, we could be heading into a potentially more active stretch of weather into next week. Global models are in general agreement on chances for precipitation, with some differences in the timing and track of these shortwaves. Although, the NBM introduces daily PoPs (20-40%) Sunday into the middle of next week. Too soon to determine any severe threat.

AVIATION /18Z TAFS THROUGH 18Z THURSDAY/

Issued at 1209 PM CDT Wed Aug 26 2026

VFR conditions will prevail through the TAF period, with a scattered Cu deck around 4000 ft. Otherwise, we will see northwest winds gusting to 20-25 KTs this afternoon, becoming 5-10 KTs after 00z this evening. No sig wx is expected at this time.

DVN WATCHES/WARNINGS/ADVISORIES

IA...None. IL...None. MO...None.